a22b17b2c1
In hardware, the audio from the 2A03 APU pins go through an inverted preamp using one of the 74HCU04 inverter chips in the motherboard. Though this may be cost-effective on Nintendo's part, the signals on the hex inverter chip can interfere with one another, especially on the audio. This can be heard as a buzz or a high pitched whine. The only known signals to interfere with the audio so far is: - /A13, the inverted signal of PPU A13 going into the cartridge connector. - /OE1, Output enable for controller reads, though this is only found present on the RF Famicom.
256 lines
No EOL
8.8 KiB
C++
256 lines
No EOL
8.8 KiB
C++
#pragma once
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#include "stdafx.h"
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#include "Snapshotable.h"
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#include "IMemoryHandler.h"
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#include "DebuggerTypes.h"
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#include "Debugger.h"
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#include "Types.h"
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#include "IBattery.h"
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#include "RomData.h"
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#include "Console.h"
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#include "CPU.h"
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#include "EPSMAudio.h"
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#include "InvA13Audio.h"
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#include "InvOE1Audio.h"
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class BaseControlDevice;
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class BaseMapper : public IMemoryHandler, public Snapshotable, public IBattery
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{
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private:
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MirroringType _mirroringType;
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string _batteryFilename;
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uint16_t InternalGetPrgPageSize();
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uint16_t InternalGetSaveRamPageSize();
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uint16_t InternalGetWorkRamPageSize();
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uint16_t InternalGetChrPageSize();
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uint16_t InternalGetChrRamPageSize();
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bool ValidateAddressRange(uint16_t startAddr, uint16_t endAddr);
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uint8_t *_nametableRam = nullptr;
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uint8_t _nametableCount = 2;
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bool _onlyChrRam = false;
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bool _hasBusConflicts = false;
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bool _allowRegisterRead = false;
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bool _isReadRegisterAddr[0x10000];
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bool _isWriteRegisterAddr[0x10000];
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MemoryAccessType _prgMemoryAccess[0x100];
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uint8_t* _prgPages[0x100];
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MemoryAccessType _chrMemoryAccess[0x100];
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uint8_t* _chrPages[0x100];
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int32_t _prgMemoryOffset[0x100];
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PrgMemoryType _prgMemoryType[0x100];
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int32_t _chrMemoryOffset[0x100];
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ChrMemoryType _chrMemoryType[0x100];
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vector<uint8_t> _originalPrgRom;
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vector<uint8_t> _originalChrRom;
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protected:
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RomInfo _romInfo;
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shared_ptr<BaseControlDevice> _mapperControlDevice;
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shared_ptr<Console> _console;
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uint8_t* _prgRom = nullptr;
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uint8_t* _chrRom = nullptr;
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uint8_t* _chrRam = nullptr;
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uint32_t _prgSize = 0;
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uint32_t _chrRomSize = 0;
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uint32_t _chrRamSize = 0;
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uint8_t* _saveRam = nullptr;
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uint32_t _saveRamSize = 0;
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uint32_t _workRamSize = 0;
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uint8_t* _workRam = nullptr;
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bool _hasChrBattery = false;
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int16_t _vramOpenBusValue = -1;
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virtual void InitMapper() = 0;
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virtual void InitMapper(RomData &romData);
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virtual uint16_t GetPRGPageSize() = 0;
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virtual uint16_t GetCHRPageSize() = 0;
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bool IsNes20();
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virtual uint16_t GetChrRamPageSize() { return 0x2000; }
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//Save ram is battery backed and saved to disk
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virtual uint32_t GetSaveRamSize() { return HasBattery() ? 0x2000 : 0; }
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virtual uint32_t GetSaveRamPageSize() { return 0x2000; }
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virtual bool ForceChrBattery() { return false; }
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virtual bool ForceSaveRamSize() { return false; }
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virtual bool ForceWorkRamSize() { return false; }
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virtual uint32_t GetChrRamSize() { return 0x0000; }
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//Work ram is NOT saved - aka Expansion ram, etc.
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virtual uint32_t GetWorkRamSize() { return HasBattery() ? 0 : 0x2000; }
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virtual uint32_t GetWorkRamPageSize() { return 0x2000; }
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virtual uint16_t RegisterStartAddress() { return 0x8000; }
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virtual uint16_t RegisterEndAddress() { return 0xFFFF; }
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virtual bool AllowRegisterRead() { return false; }
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virtual uint32_t GetDipSwitchCount() { return 0; }
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virtual bool HasBusConflicts() { return false; }
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uint8_t InternalReadRam(uint16_t addr);
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virtual void WriteRegister(uint16_t addr, uint8_t value);
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virtual void WriteEPSM(uint16_t addr, uint8_t value);
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virtual uint8_t ReadRegister(uint16_t addr);
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void SelectPrgPage4x(uint16_t slot, uint16_t page, PrgMemoryType memoryType = PrgMemoryType::PrgRom);
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void SelectPrgPage2x(uint16_t slot, uint16_t page, PrgMemoryType memoryType = PrgMemoryType::PrgRom);
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virtual void SelectPRGPage(uint16_t slot, uint16_t page, PrgMemoryType memoryType = PrgMemoryType::PrgRom);
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void SetCpuMemoryMapping(uint16_t startAddr, uint16_t endAddr, int16_t pageNumber, PrgMemoryType type, int8_t accessType = -1);
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void SetCpuMemoryMapping(uint16_t startAddr, uint16_t endAddr, PrgMemoryType type, uint32_t sourceOffset, int8_t accessType);
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void SetCpuMemoryMapping(uint16_t startAddr, uint16_t endAddr, uint8_t *source, int8_t accessType = -1);
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void RemoveCpuMemoryMapping(uint16_t startAddr, uint16_t endAddr);
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virtual void SelectChrPage8x(uint16_t slot, uint16_t page, ChrMemoryType memoryType = ChrMemoryType::Default);
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virtual void SelectChrPage4x(uint16_t slot, uint16_t page, ChrMemoryType memoryType = ChrMemoryType::Default);
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virtual void SelectChrPage2x(uint16_t slot, uint16_t page, ChrMemoryType memoryType = ChrMemoryType::Default);
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virtual void SelectCHRPage(uint16_t slot, uint16_t page, ChrMemoryType memoryType = ChrMemoryType::Default);
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void SetPpuMemoryMapping(uint16_t startAddr, uint16_t endAddr, uint16_t pageNumber, ChrMemoryType type = ChrMemoryType::Default, int8_t accessType = -1);
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void SetPpuMemoryMapping(uint16_t startAddr, uint16_t endAddr, ChrMemoryType type, uint32_t sourceOffset, int8_t accessType);
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void SetPpuMemoryMapping(uint16_t startAddr, uint16_t endAddr, uint8_t* sourceMemory, int8_t accessType = -1);
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void RemovePpuMemoryMapping(uint16_t startAddr, uint16_t endAddr);
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bool HasBattery();
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virtual void LoadBattery();
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string GetBatteryFilename();
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uint32_t GetPRGPageCount();
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uint32_t GetCHRPageCount();
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uint8_t GetPowerOnByte(uint8_t defaultValue = 0);
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uint32_t GetDipSwitches();
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void SetupDefaultWorkRam();
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void InitializeChrRam(int32_t chrRamSize = -1);
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void AddRegisterRange(uint16_t startAddr, uint16_t endAddr, MemoryOperation operation = MemoryOperation::Any);
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void RemoveRegisterRange(uint16_t startAddr, uint16_t endAddr, MemoryOperation operation = MemoryOperation::Any);
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virtual void StreamState(bool saving) override;
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void RestorePrgChrState();
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uint8_t* GetNametable(uint8_t nametableIndex);
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void SetNametable(uint8_t index, uint8_t nametableIndex);
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void SetNametables(uint8_t nametable1Index, uint8_t nametable2Index, uint8_t nametable3Index, uint8_t nametable4Index);
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void SetMirroringType(MirroringType type);
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MirroringType GetMirroringType();
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uint8_t InternalReadVRAM(uint16_t addr);
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public:
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static constexpr uint32_t NametableCount = 0x10;
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static constexpr uint32_t NametableSize = 0x400;
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unique_ptr<EPSMAudio> _epsmaudio;
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unique_ptr<InvA13Audio> _invA13Audio;
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unique_ptr<InvOE1Audio> _invOE1Audio;
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void Initialize(RomData &romData);
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virtual ~BaseMapper();
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virtual void Reset(bool softReset);
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virtual ConsoleFeatures GetAvailableFeatures();
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virtual void SetNesModel(NesModel model) { }
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virtual void ProcessCpuClock() { }
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void ProcessMiscClock()
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{
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_epsmaudio->Clock();
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_invA13Audio->Clock();
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_invOE1Audio->Clock();
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}
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virtual void NotifyVRAMAddressChange(uint16_t addr);
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virtual void GetMemoryRanges(MemoryRanges &ranges) override;
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virtual void SaveBattery() override;
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void SetConsole(shared_ptr<Console> console);
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shared_ptr<BaseControlDevice> GetMapperControlDevice();
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RomInfo GetRomInfo();
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uint32_t GetMapperDipSwitchCount();
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virtual void ApplySamples(int16_t* buffer, size_t sampleCount, double volume) {}
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uint8_t ReadRAM(uint16_t addr) override;
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uint8_t PeekRAM(uint16_t addr) override;
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uint8_t DebugReadRAM(uint16_t addr);
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void WriteRAM(uint16_t addr, uint8_t value) override;
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void DebugWriteRAM(uint16_t addr, uint8_t value);
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void WritePrgRam(uint16_t addr, uint8_t value);
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virtual uint8_t MapperReadVRAM(uint16_t addr, MemoryOperationType operationType);
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__forceinline uint8_t ReadVRAM(uint16_t addr, MemoryOperationType type = MemoryOperationType::PpuRenderingRead)
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{
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uint8_t value = MapperReadVRAM(addr, type);
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_console->DebugProcessVramReadOperation(type, addr, value);
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return value;
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}
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void DebugWriteVRAM(uint16_t addr, uint8_t value, bool disableSideEffects = true);
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void WriteVRAM(uint16_t addr, uint8_t value);
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uint8_t DebugReadVRAM(uint16_t addr, bool disableSideEffects = true);
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void CopyChrTile(uint32_t address, uint8_t *dest);
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//Debugger Helper Functions
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bool HasChrRam();
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bool HasChrRom();
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CartridgeState GetState();
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uint8_t* GetPrgRom();
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uint8_t* GetWorkRam();
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uint8_t* GetSaveRam();
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uint8_t GetMemoryValue(DebugMemoryType memoryType, uint32_t address);
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void SetMemoryValue(DebugMemoryType memoryType, uint32_t address, uint8_t value);
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uint32_t GetMemorySize(DebugMemoryType type);
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uint32_t CopyMemory(DebugMemoryType type, uint8_t* buffer);
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void WriteMemory(DebugMemoryType type, uint8_t* buffer, int32_t length);
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void GetAbsoluteAddressAndType(uint32_t relativeAddr, AddressTypeInfo *info);
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void GetPpuAbsoluteAddressAndType(uint32_t relativeAddr, PpuAddressTypeInfo *info);
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int32_t ToAbsoluteAddress(uint16_t addr);
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int32_t ToAbsoluteSaveRamAddress(uint16_t addr);
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int32_t ToAbsoluteWorkRamAddress(uint16_t addr);
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int32_t ToAbsoluteChrAddress(uint16_t addr);
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int32_t ToAbsoluteChrRamAddress(uint16_t addr);
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int32_t ToAbsoluteChrRomAddress(uint16_t addr);
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int32_t FromAbsoluteChrAddress(uint32_t addr);
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int32_t FromAbsoluteAddress(uint32_t addr, AddressType type = AddressType::PrgRom);
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int32_t FromAbsolutePpuAddress(uint32_t addr, PpuAddressType type);
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bool IsWriteRegister(uint16_t addr);
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bool IsReadRegister(uint16_t addr);
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void GetRomFileData(vector<uint8_t> &out, bool asIpsFile, uint8_t* header);
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vector<uint8_t> GetPrgChrCopy();
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void RestorePrgChrBackup(vector<uint8_t>& backupData);
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void RevertPrgChrChanges();
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bool HasPrgChrChanges();
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void CopyPrgChrRom(shared_ptr<BaseMapper> mapper);
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}; |